Tuesday, September 14, 2010

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Daily Lessons



Algebraic Expressions:

Algebra: Language of Symbols

Variables: symbols such as letters or shapes used to represent a number.

Algebraic Expression: 2+n, a number, operation and variable.

Evaluate: Find the value of the variable.

Problem:
 Jeanne has $17 in her piggy bank. How much money does she need to buy a game that costs $68?
Solution:
 Let x represent the amount of money Jeanne needs. Then the following equation can represent this problem:

17 + x = 68

We can subtract 17 from both sides of the equation to find the value of x.

68 - 17 = x
Answer:
 x = 51, so Jeanne needs $51 to buy the game.


Assignment: 11-43 odd page 30


Games: